E27.1

ICD-10Billable

Primary adrenocortical insufficiency

Official ICD-10-CM descriptor (FY2026)

Primary adrenocortical insufficiency

E27.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Addison's disease
  • Autoimmune adrenalitis

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • Addison only phenotype adrenoleukodystrophy (E71.528)
  • amyloidosis (E85.-)
  • tuberculous Addison's disease (A18.7)
  • Waterhouse-Friderichsen syndrome (A39.1)

Related codes in E27

Where this code sits

Parent code
E27

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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